Combined drilling tool and pump



E. S. SLOAN COMBINED- DRILLING TOOL AND PUMP Filer; March 29. 1926 Jan. 17, 1928. 1,656,798

1.0 5.5 A? 'as a a INVENTOR WITNESSES a Elgar: 8. Sloan ATTORNEYS Patented Jan. 17, 1928.

um'rao STATES ELGAN S. SLOAN, OF SHIPPENVILLE, PENNSYLVANIA.

COMBINED DRILLING TOOL AND PUMP.

Application filed March 29, 1926. Serial No. 98,280.

My invention relates generally to devices for removing material, such as sand, slate, pulverized rock and the like from wells, and it consists in the combinations, constructions and arrangements herein described and claimed.

An objectof the invention is the provision of a simple, reliable and conveniently operable device which affords facilities for cutting into and breaking up material at the bottom of the well'bore and for confining the loose material so that such loose material can be withdrawn from the well bore.

A further object of the invention is the provision in a device of the character described of a pump having a valved inlet in its lower part for both liquid and-objects of a solid nature, such as sand, slate, pulverized rock and the like, and having a valved outlet at its upper end through which the liquid may from the pump whereby the pump may be operated at the bottom of a well bore until the space within the pump is practically filled with loose material, such as sand, slate, pulverized rock and the like, at which time the pump may be withdrawn from the well bore and the contents thereof removed.

A further object of the invention is the provision of a device of the character described which can be operated by means of an ordinary drilling cable.

Other objects and advantages of theinvention will be apparent from the following description, considered in conjunction with the accompanying drawings, in which Figure 1 is a side elevation of a combined drilling tool and pump embodying the in vention with portions of the pump barrel casing broken awayto disclose parts which are disposed therein,

Figure 2 is a vertical central section through the device, showing the outlet valve at the upper end of the pump barrel in open position, 1

Figure dis a fragmentary sideelevation of a portion of the pump barrel and of the combined pump piston and drill within the pump barrel, the view being taken at right anglesto Figure 1 and a portion of the pump barrel being broken away to disclose the combined drill and pump piston,

Figure l is a transverse section through the device, the view being taken substantially along the line et l of Figure 2, and 1 Figurefi is a transverse section through the device, the View being taken substantially along the line 55 of Figure 2. In carrying out the invention. I make use of a tubular body 1 which is adapted to be lowered into a well bore. The lower edge of the tubular body 1 is formed to produce a pair of opposite sharp edged and rather pointed cutting blades 2 and a pair of concavely curved portions or notches?) which define inlets through which matter may pass into the space within the tubular body 1. The tubular body 1 constitutes a pump barrel. A combined drill head and piston is rcciprocable in the barrel 1 and comprises a body l which is formed with the lower end wall thereof beveled or inclined oppositely at from a transverse median line of the piston body to its outer edge, thus producing a relatively sharp diametrical cutting edge 6 on the lower-end of the piston'body. The piston body l also is formed with a pair of vertical passages 7 which open at their lower ends through the inclined faces 5 at opposite sidcsof the cutting edge 6 and which open at their upper ends through inwardly and downwardlyinclined faces 8 on the top of the piston body l, the respective faces 8 being parallel to the corresponding faces 5; The piston body 4. is provided between the upper ends of the passages 7 with an integral upstanding central extension or stem 9, the upper end portion of which is reduced as indicated at 10 and is provided'with an axial socket 11 for the reception of the adjacent attaching end portion 12 of a section 13 of an operating rod for the piston. The section 13 of the piston operating rod is connected by means of a collar coupling 14 with another section 15 of the operating rod and the section 15 may be attached atit-s upper end, as at 16, to the shank of a socket member 17 to which a drilling cable 18 may be secured. The socket member 17 may include a frustoconical portion 19, the larger end of which is considerably larger in diameter than the sections 15 and the shank 17 of the operating rod, for a purpose to be presently described. The connections between adjacent sections and members of the hereinbefore described operating rod for the piston may be effected by means of cooperative screw threads on the meetin end portions of adjacent sections of the operating rod and each of the hereinbefore mentioned members of the operating rod may have opposite flattened faces, as at till til)

adapted to be gripped between the jaws of a wrench when it is desired to connect or disconnect adjacent members of the operatmg rod.

lhe portion of the operating rod that extends between the collar 14; and the trustecenical portion 19 of the cable socket entends slidably through a tubular guide 21. The tubular guide .21 protrudes from the upper end of the pump barrel 1 and is sup ported in concentric relation with the pump barrel by means of a supporting ring or bushing 22 and a plurality of radial supporting arms 23 which preferably are integral with both the supporting ring 22 and the lower end portion of the tubular guide 21, the supporting ring 22 being secured in place in the upper end portion of the pump barrel 1 in any suitable known manner, as by means of screw threads, not shown, or other suitable known fastening devices. The upper edge of the pump barrel 1 beveled or inclined iupu-ardly and inwardly as indicated at 24 andconstitutes a seat for a complementary beveled rim edge 25 of a cap valve 26 which'is slidable freely on the extending upper end portionof the tubular guide 21 to and from position to rest at its edge on the beveled upper edge of the pump barrel 1, the cap valve 26 having a central opening 27 through which the upper end portion of the tubular guide 21 extends. The supporting arms 23.1nay have inclined upper edges-as best seen at 28 in Figure 2 on which aninwardly curved annular portion 29 of the crown of the cap valve 26 will rest when the edge of the cap valve abuts the upper edge of the pump barrel so that pressure on the cap valvewhen the cap valve is on its seat will be sustained by the supporting arms 23 as well as by the contacting edge portions of the pump barrel and valve cap and therefore such contacting edge portions of the pump barrel and the valve 26 will not bedeformed or unduly worn because of theimposition oil? repeated stresses on the crown of the cap valve. The space between the edges of the pump barrel and the cap valve when the cap valveiis raised, as shown in Fig. 2constitutes an outlet through which liquid may pass from the upper part of the pump barrel. In this connection. it is to be noted that the supporting arms are of such thickness that the vertical passages between the supporting arms 23 are ofisuilicient area in cross section to permit liquid to pass freely therethrough and through the open outlet at the upper end of the pump barrel but are too small to permit the passage of particles of any considerable size which may have ontered the pump barrel. The vertical passages between the arms 23 are shown to ad vantage in Figure 5 and are indicated atBO. The vertical passages 7 1n the piston body are covered at their upper ends by upwardly opening flap valves 31. and 32, respectively, the flap valve 32 having a pair of cars 33 which straddle the upstanding extension 9 on the piston body andthe lap valve All having a pair of cars fi l which are disposed in straddling relation to the ears Aligned pivot elements 35 extend through aligned openings in the juxtaposed ears of the flap valves into opposite vertical portions of the extension 9 and support the flap valves for swinging movement about an axis which extends diametrically of the pis' ton body, the flap valves being capable of swinging fronrthe full line positions of Figure 2 to the dotted line position of the same Figure. When the flap valves are in till the positions indicated by the tall lines in t Figure 2 and as shown in Figures and 4-, they will rest llatwise adjacent to their marginal edges on the inclined faces 8 at the top of the piston body and will cover the vertical passages 7. i

From the :t'orcgoing description ol. the various parts of the device, the operation thereof may be readily uiulcrstood. The collar Ll and the trusto-conical member 151 constitute stops on the piston operatii'ig rod for engaging with opposite ends of the tuba lar guide 21 to limit the length of the operating strokes of the combined. iiston and drill head. Since the portion of the open ating rod that extends between. the collar 14 and the frusto-eonical memberlfl is made up of separately connected members, it will be manifest that the length of operating strokes of the combined piston and drill head 'an be varied by using sections oi. dill crcnt lengths to term the portion of the operating rod between the stop members 14: and 1%).

In use, the cable 18 and the )arts suspended therefrom will be lowered into a well bore. The cutting edges'at the lower end of the pump barrel will strike. the bottom oi. the well here and will cut into the material at the bottom of the well here. At the time the lower end of the pump barrel strikes the bottom of the well bore, the emu bined piston and drill head will be disposed within the pump barrel in the position shown in Figure 2. The downward move ment of the pump barrel of eoursc: stopped when the lower end of the pump bar rel strikes the bottom of the well bore and further down 'ard ii'iovcment ofthe oyunrat iug cable will permit the combined [listen and drill head to move downward in the pump barrel. The length. oi the portion of the operating rod that extends between the collar 14 and the flap member 15.) is such that the cutting edge 6 of the combined piston and drill. head will strike and out into the bottom of the well, bore before the member 19 has been lowered to position to contact with the upper end oil the tubular guide 21. The drilling cable is then reciprocated vertically and the cutting edge of the combined piston and drill head will strike and cut into the material at the bottom of the well bore atthe end of the down stroke of the cable. If desired, the cable may be reciprocated with a short stroke so that the collar 1% will not be moved upward against the lower end of the tubular guide 21 during the reciprocation of the cable and then only the combined piston and drill head will be reciprocated vertically, the pump barrel remaining in a.

position of rest on the bottom of the well bore. If a longer stroke is used in the reciprocation of the drilling cable, the contact of the collar let with the lower end of the tubular guide 21 before the upward stroke has been completed, will cause the pump barrel 1 to be raised from the bottom of the well bore so that on the return or downward stroke, the cutting edge of the pump barrel will strike and cut into the material at the bottom of the well bore and then the combined piston and drill head also will strike and cut into the material at the bottom of the well bore at the end of the downward stroke of the cable. The flap valves 31 and 32 will open during the downward movement of the piston and will close during the upstroke of the piston so that after the initial down stroke of the device, loose material will be drawn or sucked into the pump barrel during each upward stroke of the piston and will pass through the passages 7 in the piston body to the space within the pump barrel above the piston during the succeeding downward strokes of the piston, The liquid which enters the space within the pump barrel above the piston may be forced therefrom duringthe operation of the piston through the outlet between the upper edge of the pump barrel and the cap valve 26, the latter being raised by the impact of the liquid thereagainst to permit the escape of such liquid from the pump barrel. However, the heavier material and the larger particles of waste material will remain within the pump barrel above the piston and the reciprocation of the cable may be continued until the available space within the pump barrel above the piston is filled with waste material. The cutting edges at the lower ends of both the piston and the pump barrel (if a relatively long operating stroke of the cable is employed) will break up and dislodge material at the bottom of the well bore and such material subsequently will be drawn into the pump barrel. If a short operating stroke of the cable is employed, the initial downward movement of the device willcause the pump barrel to cut into material at the bottom of the Well bore when the device is lowered to position and thereafter, only the piston the device again is ready for further use in cutting, breaking up and dislodging material at the bottom of a well bore and for removing waste material from the well bore.

Obviously, the invention is susceptible ofen'ibodiinent informs other than that which is illustrated in the accompanying drawings, and I therefore consider as my own all such modifications and adaptations thereof as fairly fall within the scope of the appended claims.

I claim 1. A combined well drilling tool and pump comprising a tubular body having a cutting edge at its lower end,'a piston orplunger of relative weight reciprocable within the lower end portion of the tube, a cutting edge upon the lower end of piston, a stem extending upwardly from the piston to which a cable may be attached for lifting and dropping the piston to produce a drilling operation, and means connecting the tubular member to the pistonstem to permit relative movement between the stein and tubular member whereby a combined or individual drilling operation of said tubular member and piston or plunger may be obtained with predetermined lifting and lowering of the piston.

2. A combined well drilling tool and pump comprising a tubular body having a cutting edge at its lower end, a piston or plunger of relative weight reciprocable within the lower end portion of the tube, a cutting edge upon the lower end of piston, a stem extending upwardly from the piston to which a cable may be attached for lifting and dropping the piston to produce a drilling operation, a slidable connection between the upper end of the tubular member and said stem, and stop means on the stem to limit relative movement between the stem and tubular member whereby with certain lifting and dropping ofthe tool individual or joint drilling action of the tubular member and piston can be obtained.

3. A combined well drilling tool and pump comprising a tubular body having a cutting edge at its lower end a piston or plunger of relative weight reciprocable within the lower end portion of the tube, a cutting edge upon the lower end of piston, a stem extending upwardly from the piston to which a cable may be attached for lifting and dropping the piston to produce a drilling operation, a slidable connection be i no tween the upper end ofthe tubular member and said stem, and ad uStabIe means Wi1610, by the movement of the tubular member upon said stem may be limited whereby with predetermined lifting and dropping of the tool individual or joint drilling action of the tubular member and piston may be obtained. y

i 4. A well cleaning device comprising a tubular body, a valved piston reciprocable in the tubular body, a pistonstein protruding from the upper end of the tubular body, a. tubular guide connected with the upper end portion of the tubular body and disposed'in concentric relation with the latter, :gaid piston stem extending slidably through said tubular guide, and a cap-shaped valve slidable on said tubular guide to and from position to contact. at its edge with the upper edge of said tubular body. i 5. A Well cleaning device comprising a tubular body, atvalved piston recip'rocable in the tubular body, a piston stem protruding from the upper end of the tubular body,

a tubular guide connected with theupper end portion of the tubular body and disposed in concentric relation with the latter, said piston stein extending slidably through said tubular guide, and a cap-shaped valve slidable on said tubular guide to and from position to contact at its edge with the up; per edgeof said tubular body, the meeting edges of said cap-shaped valve and said tubular body being compleinentarily eled.

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6. A device of the cha'acter described comprising a vertically disposed tubular body, a piston reciprocable in the tubular body, a supporting ring secured in the up-- per end portion oi the tubular body, in- Wardly extending radial arms on sale sup porting ring, a tubular guide supported at the inner ends oi said radial. arms, and protruding from the upper end of said tubular body, said tubular guide being comunitric with id tubularbody, and a ea reliiiiped valve s idable on said tubular guide to and from position to rest at its erge on the upper edge of said tubular body. M c

7. A device of the character described comprising a vertically disposed tubular body, a piston reciprocableiuthc tubular body, a supporting ring secured in the upper end portion of the tubular body, inwardly extending radial arms on said sup porting ring, a tubular guide supportedat theiinncr ende of said radial arms, and protruding from the upper end of said tubular body, said tubular guide being concentric with said tubular body, and a cap-shaped valve slidable on said tubular guide to and from position to rest at its edge on the up per edge of said tubular body, said radial arms having inclined upper edges, and The crown portion otsaid cap-shaped valve being formed to contact with the upper ed of said arms when the edge of said c: shaped valve contacts with the upper ed said tubular body; i i

ELGAN S. SLOAN.

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